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#include "generator/borders_generator.hpp"
#include "geometry/mercator.hpp"
#include "base/logging.hpp"
#include "base/string_utils.hpp"
#include "std/fstream.hpp"
#include "std/iostream.hpp"
#include "std/sstream.hpp"
namespace osm
{
bool ReadPolygon(istream & stream, m2::RegionD & region, string const & filename)
{
string line, name;
double lon, lat;
// read ring id, fail if it's empty
getline(stream, name);
if (name.empty() || name == "END")
return false;
while (stream.good())
{
getline(stream, line);
strings::Trim(line);
if (line.empty())
continue;
if (line == "END")
break;
istringstream iss(line);
iss >> lon >> lat;
CHECK(!iss.fail(), ("Incorrect data in", filename));
region.AddPoint(MercatorBounds::FromLatLon(lat, lon));
}
// drop inner rings
return name[0] != '!';
}
bool LoadBorders(string const & borderFile, vector<m2::RegionD> & outBorders)
{
ifstream stream(borderFile);
string line;
if (!getline(stream, line).good()) // skip title
{
LOG(LERROR, ("Polygon file is empty:", borderFile));
return false;
}
m2::RegionD currentRegion;
while (ReadPolygon(stream, currentRegion, borderFile))
{
CHECK(currentRegion.IsValid(), ("Invalid region in", borderFile));
outBorders.push_back(currentRegion);
currentRegion = m2::RegionD();
}
CHECK(!outBorders.empty(), ("No borders were loaded from", borderFile));
return true;
}
}
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